code: def testUnequalVectorLengths(self):
      p = Pool({"foo": [[548.4, 489.44, 45787.0], [45.1, 78.0]]})
  
      results = PoolAggregator()(p)
  
      # should result in no aggregation of the 'foo' descriptor
      self.assertEqualVector(results.descriptorNames(), [])
  
file_path: essentia/test/src/unittests/stats/test_poolaggregator.py
imports: from essentia_test import *
label_desc: Use image node_id 6 for calling the TestPoolAggregator obj's underlying member method code with example usage: obj.testUnequalVectorLengths() without return types